Generally, a download manager enables downloading of large files or multiples files in one session.
Many web browsers, such as Internet Explorer 9, include a download manager.
Stand-alone download managers also are available, including the Microsoft Download Manager.

if you do not have a download manager installed, and still want to download the file(s) you've chosen, please note:

You may not be able to download multiple files at the same time.
In this case, you will have to download the files individually.
(You would have the opportunity to download individual files on the "Thank you for downloading" page after completing your download.)

Files larger than 1 GB may take much longer to download and might not download correctly.

You might not be able to pause the active downloads or resume downloads that have failed.

The Microsoft Download Manager solves these potential problems.
It gives you the ability to download multiple files at one time and download large files quickly and reliably.
It also allows you to suspend active downloads and resume downloads that have failed.

Windows BranchCache can reduce wide area network (WAN) utilization and enhance network application responsiveness when users access content in a central office from branch office locations. When you enable BranchCache, a copy of the content that is retrieved from the Web server or file server is cached within the branch office. If another client in the branch requests the same content, the client can download it directly from the local branch network without needing to retrieve the content by using the WAN. This Management Pack contains definitions of monitors and tasks for monitoring BranchCache clients, hosted cache servers, and content server-side hashing on servers running IIS and file servers. It also provides template to generate bandwidth usage and saving reports.

Feature Summary
BranchCache™ Management Pack provides an overall manageability solution for health monitoring and performance reporting for the BranchCache feature available in Windows 7 and Windows Server 2008 R2.
BranchCache is a content caching and retrieval framework designed to reduce branch office WAN link utilization. To optimize WAN bandwidth, BranchCache copies content from your main office content servers and caches the content at branch office locations, allowing client computers at branch offices to access the content locally rather than over the WAN. BranchCache has two modes of operation: distributed cache mode and hosted cache mode. When the content cache at a branch office is distributed among client computers, BranchCache is running in distributed cache mode. When the content cache at a branch office is hosted on a server computer, BranchCache is running in hosted cache mode.

See BranchCache on Microsoft TechNet for detailed technical information about BranchCache operation and architecture.
The BranchCache Management Pack, used within System Center Operations Manager, provides monitoring and reporting solutions to IT professionals and administrators at both the branch office level and the system level. Key features of the management pack include:

Monitoring and reporting for the Windows BranchCache feature in Windows 7 and Windows Server 2008 R2

A diagram view of the entire BranchCache deployment

A branch-centric view, with automatic discovery of branch offices using hosted cache mode and branch offices using distributed cache mode

Reports, including a reporting management pack to generate bandwidth usage and bandwidth saving reports for selected branch offices or nodes